Crosman 1322 with Heavier Pellets?

[kj]

if your limitation is fps, not fpe, why not use 16-18gr and up the power output to get those close to 500fps ?

peace
kj

The Canadian law is that you must not exceed 500 fps AND 4.2 fpe in an airgun if you don't have a firearm license. And with pistols and revolvers (hand guns), you must have a Restricted Possession and Acquisition License if you want to go over that limit. You could indeed boost the power to use heavier pellets at sub-500 fps velocity, but the thing is that the RCMP make their test with commercially available, lowest weigth pellets. So if your gun shoots a 18 grains pellet at say 485 fps, you get 9.4 fpe. Nice, but if your gun is tested with RWS Hobby 11.9 grains, and they fly at 560 fps for example, you get 8.3 fpe, so you're toast.

FWIW, my best advice is to find the lightest commercially available pellet and tune your pistol for max. velocity with it, without going over the 4.2 fpe limit. Sad, but safer. Or don't mod your gun at all power-wise.

Here's a rather useful page to calculate fpe: https://www.pyramydair.com/article/What_is_Muzzle_Energy_August_2003/5

i see now. from his original post it looked like he was trying to find a way to get more power without going over the 500fps. having an energy part of the law is pretty rough.
kj